I am having some difficulty with saving NSAttributedStrings as RTFD and
then recovering
them with attachments intact. I generate a string containing an attachment
and turn that into
RTFD. When I turn that RTFD back into an NSAttributedString, I get the
.string back, and I
get an attachment, but the attachment's .contents is empty.
This is the smallest example I can come up with:
func testSaveAndRestoreAttachment() {
// Build up the string "deadbeef<attachment foobar>deadbeef"
let originalContent = "foobar".data(using: .utf8)
let originalAttachment = NSTextAttachment(
data: originalContent, ofType: "public.plain-text")
let originalString = NSMutableAttributedString(string: "deadbeef")
originalString.append(NSMutableAttributedString(attachment:
originalAttachment))
originalString.append(NSMutableAttributedString(string: "deadbeef")
// save string as RTFD (note that generated RTFD contains "foobar"
inside.)
let savedRtfd = originalString.rtfd(from:
NSRange(0..<originalString.length))!
// Recover string
let recoveredString = NSAttributedString(rtfd: savedRtfd,
documentAttributes: nil)!
// Implementation of attachments() can be found below.
let recoveredAttachments = attachments(from: recoveredString)
// There *is* an attachment!
let recoveredAttachment = recoveredAttachments[0]
// Want to get Data("foobar") but actually get nil :(
XCTAssertNotNil(recoveredAttachment.contents)
}
When I print out the RTFD I can see the document includes the attachment
"foobar".
I'm assuming that I need to pass some additional information when I
call NSAttributedString(rtfd:,
documentAttributes:)
but I'm at a loss here.
Am I missing something simple? Perhaps a magical setting to be passed in
documentAttributes?
-jeff
** This is the attachments() function used above:
func attachments(from s: NSAttributedString) -> Array<NSTextAttachment> {
var attachments: Array<NSTextAttachment> = []
s.enumerateAttribute(.attachment, in: NSRange(0..<s.length)) {
value, range, stop in
guard let a = value else {
return
}
attachments.append(a as! NSTextAttachment)
}
return attachments
}
_______________________________________________
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to arch...@mail-archive.com
